Mysql多实例安装

 

--1.查看现有实例的选项值
[root@mast ~]# mysqladmin --user=root --password=123456 --host=mast --port=3306 variables


--2.安装另一mysql
[root@mast mysql-5.5.30]# mkdir -p /usr/local/mysql3307
[root@mast mysql-5.5.30]# mkdir -p /usr/local/mysql3307/data

[root@mast mysql-5.5.30]# cmake .  \
> -DCMAKE_INSTALL_PREFIX=/usr/local/mysql3307 \
> -DMYSQL_DATADIR=/usr/local/mysql3307/data \
> -DDEFAULT_CHARSET=utf8 \
> -DDEFAULT_COLLATION=utf8_general_ci \
> -DEXTRA_CHARSETS=all \
> -DENABLED_LOCAL_INFILE=1 \
> -DMYSQL_TCP_PORT=3307 \
> -DMYSQL_UNIX_ADDR=/tmp/mysql3307.sock

[root@mast mysql-5.5.30]# make
[root@mast mysql-5.5.30]# make install

[root@mast mysql-5.5.30]# cd /usr/local/mysql3307
[root@mast mysql3307]# scripts/mysql_install_db --user=mysql \
>          --basedir=/usr/local/mysql3307 \
>          --datadir=/usr/local/mysql3307/data

[root@mast mysql3307]#  chown -R root:mysql .
[root@mast mysql3307]# chown -R mysql:mysql data


--3.编辑my.cnf
vi /etc/my.cnf
[mysqld_multi]
mysqld     = /usr/local/mysql/bin/mysqld_safe
mysqladmin = /usr/local/mysql/bin/mysqladmin
user       = multi_admin
password   = multipass

# The MySQL server
[mysqld1]
port            = 3306
socket          = /tmp/mysql.sock
skip-external-locking
key_buffer_size = 16M
max_allowed_packet = 1M
table_open_cache = 64
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M

general_log=1
log_output=TABLE,FILE
slow_query_log=1
long_query_time=1
basedir=/usr/local/mysql
datadir=/usr/local/mysql/data

[mysqld2]
port            = 3307
socket          = /tmp/mysql3307.sock
skip-external-locking
key_buffer_size = 16M
max_allowed_packet = 1M
table_open_cache = 64
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M

general_log=1
log_output=TABLE,FILE
slow_query_log=1
long_query_time=1
basedir=/usr/local/mysql3307
datadir=/usr/local/mysql3307/data
user=mysql


--4.启动mysql,为各个实例的multi_admin设置密码，
mysqld_safe --user=mysql --port=3307 --socket=/tmp/mysql3307.sock --basedir=/usr/local/mysql3307 --datadir=/usr/local/mysql3307/data &
mysqld_safe --user=mysql --port=3306 --socket=/tmp/mysql.sock --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data &

mysql -uroot  --socket=/tmp/mysql3307.sock  --port=3307 -p
mysql -uroot  --socket=/tmp/mysql.sock  --port=3306 -p

--各个实例设置密码
GRANT SHUTDOWN ON *.*  TO 'multi_admin'@'localhost' IDENTIFIED BY 'multipass';

mysqladmin -uroot --socket=/tmp/mysql3307.sock --port=3307 -p shutdown
mysqladmin -uroot --socket=/tmp/mysql.sock --port=3306 -p shutdown


--5.启动与关闭mysql
/usr/local/mysql/bin/mysqld_multi  --defaults-file=/etc/my.cnf start 1,2
/usr/local/mysql/bin/mysqld_multi  --defaults-file=/etc/my.cnf stop 1,2